安装12月macOS更新后Mac睡眠时随机重启求助（High Sierra 10.13.3）

Hey there, sorry to hear your Mac's been acting up with random restarts while sleeping after updating to High Sierra 10.13.3—let's go through some practical troubleshooting steps that often resolve this kind of issue:

1. Reset the SMC (System Management Controller) #

The SMC handles power-related functions, so resetting it's usually the first move for sleep/power glitches. The process varies by Mac model:

• Macs with T2 Security Chip: Shut down your Mac, then hold the power button for 10 seconds. Release it, wait a few seconds, then press the power button to turn it back on.
• Non-T2 Laptop Macs: Shut down, then hold Shift + Control + Option plus the power button for 10 seconds. Release all keys, wait a few seconds, then boot up normally.
• Non-T2 Desktop Macs: Unplug the power cord, wait 15 seconds, plug it back in, then turn on your Mac.

2. Reset NVRAM/PRAM #

NVRAM stores small system settings that might get messed up after an update. Here's how:

• Shut down your Mac, then turn it on and immediately hold Command + Option + P + R. Keep holding until you hear the second startup chime (or see the Apple logo flash twice on newer models), then release the keys.

3. Adjust Sleep Settings & Disable Auto-Restart #

• Open System Preferences > Energy Saver. For desktops, uncheck "Wake for network access"; for laptops, uncheck "Wake for Wi-Fi network access"—sometimes unintended network wake triggers cause random restarts.
• Disable automatic restart on freeze: Open Terminal, run this command (enter your admin password when prompted, it won't show as you type):

  sudo systemsetup -setrestartfreeze off
  

4. Check Crash Logs for Clues #

• Open the Console app. On the left sidebar, navigate to User Reports > Crash Reports or System Reports > Diagnostics & Usage. Look for logs around the time your Mac restarted—search for "kernel panic" specifically, as this points to driver or system component conflicts.

5. Rule Out Third-Party Software Conflicts #

• Third-party apps like antivirus tools, system optimizers, VPNs, or custom drivers often clash with macOS updates. Try uninstalling recently installed apps (use their official uninstallers if available) and test sleep mode again.
• Use Activity Monitor to check for any background processes that are behaving abnormally, especially ones related to power management.

6. Repair Disk Permissions & Drive Health #

• Open Disk Utility, select your system drive, then click the First Aid button. Run the repair—this fixes permission issues with system files that could be causing sleep problems.

If none of these steps fix the issue, you might want to try a clean install of High Sierra (make sure to back up your data first) or reach out to Apple Support to rule out hardware issues like faulty RAM or power supply components.

内容的提问来源于stack exchange，提问作者Tansau